P1731

P1731 1ST ENGINE BRAKING





Description
Fail-safe function to prevent sudden decrease in speed by engine brake other than at M1 position.




DTC Logic

DTC DETECTION LOGIC

DTC DETECTION LOGIC:

DTC CONFIRMATION PROCEDURE

NOTE:
If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select "Data Monitor" in "TRANSMISSION".
3. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.

ENGINE SPEED : 1,200 rpm
GEAR : "1" position
MANU MODE SW : ON

Is "P1731" detected?
YES - Go to P1731.
NO - Check intermittent incident. Refer to Intermittent Incident.




Diagnosis Procedure
1.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to Main Power Supply and Ground Circuit.
Is the inspection result normal?
YES - Replace the control valve with TCM. Refer to Exploded View.
NO - Repair or replace damaged parts.